Top Definition
The thing you see when a girl is wearing her skirt way too short.
"Wow, did you see that girl's dress?"
"YES!! I could see her fish whistle!"
by 0125852596969 August 12, 2012
a one hitter (dugout)
Hey Bro, lemme get a hit off that fish whistle.
by dinsker2 August 20, 2007
The sound a woman's vagina makes when she queefs.
I was getting down with Betty Sue last night, and her fishwhistle was blowing hard.
by Fishwhistle Master May 27, 2012
derogatory term to describe male genitalia.
johns fishwhistle is dirty
by rickcrow April 09, 2006

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